Troubleshooting - Huawei UPS2000-A Series User Manual

UPS2000-A-(6 kVA-10 kVA)
User Manual
If the UPS is faulty, alarm information is displayed on the LCD. Clear critical alarms before
powering on the UPS again. Otherwise, the fault scope expands or the UPS is damaged.
Table 8-1
Table 8-1 Solutions to common faults
No.
1
2
3
4
Issue 05 (2019-12-19)
lists the solutions to common faults.
Symptom
The mains switch is ON.
The LCD does not display
anything. The system
does not perform
self-tests.
The mains is normal, but
the bypass indicator is off.
The UPS runs in battery
mode.
The UPS does not report
faults, but has no output
voltage.
The UPS does not start
after you press
Copyright © Huawei Technologies Co., Ltd.
8

Troubleshooting

Possible Cause Measure
 The input 
power supply
is not

connected.
 The input
voltage
exceeds the
limit.

The mains 
switch is

OFF.
 The input
power cable
is not
securely
connected.
The output Check the output power cable
power cable is connection.
not securely
connected.
 is not 
pressed long
enough.
8 Troubleshooting
Check the input power cable
connection.
Use a multimeter to check that
the UPS input voltage meets
specifications.
Turn on the mains switch.
Check the input power cable
connection.
Press for more than 5
seconds until you hear a beep
sound.
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